What the data for this category looks like
Engineering consulting industry data sources include building decoration industry specifications released by the national housing and urban-rural development authority, pre-project feasibility study reports, cost quota manuals, and on-site construction log archived files. The update rhythm adjusts dynamically with industry specification revisions and project progress, with no fixed cycle. Most documents are structured in chapters, and include fields such as project number, technical parameters, compliance clauses, and cost accounting tables. Units include square meters, ten thousand yuan, kilonewtons, millimeters and other engineering professional units. Some documents include drawing indexes and parameter comparison tables.
What constraints these characteristics impose on the knowledge base retrieval and recall link
The structured chapter-based nature of engineering consulting data requires retrieval to match specific fields, rather than using generic text matching, to avoid irrelevant results. The high proportion of long documents requires chunking to retain chapter logic, preventing splitting from breaking the contextual association of technical parameters. The specificity of professional units and terms requires the recall link to connect to the industry term library, correcting synonym misjudgments. The dynamic update attribute requires the retrieval link to support incremental synchronization mechanisms, ensuring recalled content uses the latest version of industry specifications and project data.
How to Set Configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
segment length | 800–1200 characters | Engineering consulting documents often contain continuous technical parameters. This length retains the core content of a single chapter while avoiding contextual breaks |
recall count | Top 6–8 entries | Engineering consulting retrieval needs to cover multiple types of information including compliance clauses, cost data, and project cases. Excessive entries will interfere with core results |
similarity threshold | 0.72–0.85 | Professional term matching has low tolerance for errors. A threshold that is too high will miss relevant compliance clauses, while a threshold that is too low will introduce irrelevant content |
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | Parsing large cost quota files takes a long time. This duration covers the complete parsing and chunking process |
incremental sync switch | Enabled | Industry specifications and project data are updated dynamically. This ensures the timeliness of recalled content |
rerank return count | Top 3–5 entries | Core retrieval results need to prioritize the most relevant compliance clauses and technical solutions |
The parameter values provided on this page are common recommended starting points for determining configurations. Actual values are affected by material form, data volume, and business rules. Specific issues require case-by-case analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Mistakes
- Phenomenon: Calling the knowledge base retrieval interface returns a document URL. Clicking the URL returns the error "Only support .txt, .m". Cause: The uploaded engineering consulting document is in PDF or CAD format, and text extraction and parsing have not been completed. The interface returned URL only supports access to plain text files.
- Phenomenon: After setting custom chunking rules, technical parameters appear broken in retrieval results. Cause: The segment length is set too small, splitting a single cost accounting table into multiple fragments and losing parameter association relationships.
- Phenomenon: A 400 status code is returned when synchronizing engineering consulting documents to an external knowledge base. Cause: The document contains engineering-specific special characters that have not been escaped, triggering external interface verification interception.
How to Confirm Configuration is Correct
- Upload a typical engineering consulting document, such as a cost quota excerpt. View the parsed chunked content, confirm that the chunks retain complete technical parameters and chapter logic, and adjust the configuration until it meets expectations.
- Enter a professional search term, such as "external wall insulation compliance clauses". Check the number and relevance of recalled results, and adjust the similarity threshold until the matching results meet business requirements.
- Trigger an incremental synchronization task. Check the synchronization log, confirm that the latest version of industry specification documents has been included in the knowledge base retrieval scope.
- Call the retrieval interface, verify that the returned document URL can be accessed normally, and there are no format restriction errors.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.